Process for dyeing concrete
AssigneeChemische Werke Brockhues AG
InventorAxel E. Jungk
Life of this patent
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Abstract
Coloring materials used in a process of dyeing concrete consist of pigment granules other than compacted or briquetted granules. The granules consist of one or more pigments, one or more binders for promoting the dispersing of the pigments in the concrete, and optional other additives. Such pigment granules, particularly bead granules, will easily dissolve in the concrete mixer and will be homogeneously dispersed in the concrete.
Claims11
A process of dyeing concrete comprising mixing pigment-containing granules with cement and aggregate at conditions sufficient to result in a generally homogeneous dispersal of pigment in the concrete, wherein:
- pigment-containing granules other than compacted or briquette granules are used,
- each granule consisting essentially of at least one pigment selected from the group consisting of manganese oxide and iron oxide and of at least one binder for promoting the dispersal of the pigment in the concrete,
- at least 90% of the granules have a particle size of about 20 microns or more, and
- the finite water content of the granules is not in excess of about 4.2%.
A process of dyeing concrete comprising mixing pigment-containing granules with cement and aggregate at conditions sufficient to result in a generally homogeneous dispersal of pigment in the concrete, wherein:
- pigment-containing granules other than compacted or briquette granules are used as a coloring material,
- each granule consisting essentially of at least one pigment selected from the group consisting of manganese oxide and iron oxide and of at least one binder for promoting the dispersal of the pigment in the concrete,
- the finite water content of the granules is not in excess of 4.2%.
Dependencies are inferred from the claim text.